Courthouses in Arnett, Oklahoma, the US. Courthouses locations in Arnett, Oklahoma. Find the nearest courthouses locations, near you. All types of business services ATM Bank Courthouse Finance Funeral home Insurance Lawyer School All courthouses in Arnett Ellis County Court Clerk Courthouse +1 580-885-7255 100 Washington Street # 2, Arnett, Oklahoma 73832 Write a review Phone Directions